The Diablo 1-1/4" x 8" x 13" Rebar Demon SDS-Max 4-Cutter Full Carbide Head Hammer Drill Bit is engineered for professionals who need a reliable, long-lasting solution when drilling through reinforced concrete, concrete, brick, and block. Diablo designed this hammer drill bit with a full carbide head and four precision cutters to deliver faster drilling, reduced vibration, and dramatically extended bit life compared to standard 2-cutter bits - making it a go-to choice for anchor setting and structural drilling in the most demanding job-site conditions.

Key Features

• Up to 7X longer life versus standard 2-cutter hammer drill bits - fewer bit changes and lower cost per hole on large reinforced concrete drilling projects.
• Dura-Carbide full carbide head features up to 2X more carbide material and withstands up to 1800 deg. Fahrenheit of intense heat - standard bits fail at 800 deg. Fahrenheit, meaning this bit stays effective through rebar hits that would destroy conventional bits.
• Impact Resistant 4-Cutter Full Carbide Head extracts smaller bites of rebar for controlled, consistent carbide wear and reduced vibration - delivering fast, precise holes without the jarring impact common in rebar-heavy concrete drilling.
• Tri-Metal Fusion Welding features up to 3X stronger weld to keep the full carbide head intact during extreme impact such as rebar - preventing head breakage during the toughest hammer drilling applications.
• Precision Tip delivers the stability and accuracy required for fast, precise holes - critical when setting anchors in reinforced concrete where hole placement matters.
• Optimized flute design removes dust faster, keeping the carbide head cooler for ultimate strength and durability - prolonging bit life and maintaining drilling speed throughout the hole.
• Wear mark indicator ensures precise hole making - so you always know when the correct depth has been reached without guessing or over-drilling.
• Optimized for maximum performance in corded and cordless SDS-Max rotary hammers - compatible with the professional-grade tools already on the job site.

Why This Product

• When drilling into reinforced concrete where rebar contact is unavoidable, standard bits fail quickly at 800 deg. Fahrenheit - this bit's Dura-Carbide head withstands up to 1800 deg. Fahrenheit, allowing work to continue without constant interruption for bit replacement.
• The 4-cutter full carbide head design takes controlled, smaller bites of rebar rather than grinding against it aggressively - this means reduced operator fatigue from vibration and a longer-lasting bit, even in heavy-rebar applications.
• With a 1-1/4" diameter and 8" working length in a 13" overall format, this bit is sized for anchor-setting work in thick reinforced concrete slabs and walls where depth and diameter precision are equally important.
• Produced in Germany with Tri-Metal Fusion Welding technology, the full carbide head stays bonded under the extreme impact forces generated by high-powered SDS-Max rotary hammer drills - providing confidence that the bit will not fail mid-hole.

Specifications

• Brand: Diablo
• Model Number: DMAMX1290
• Category: SDS-Max 4-Cutter
• Diameter: 1-1/4"
• Length: 13"
• Working Length: 8"
• Shank: SDS Max
• Head Type: Full Carbide Head
• Number of Cutters: 4
• Compatible Tools: SDS-Max Rotary Hammer Drill
• Materials: Reinforced Concrete; Concrete; Rebar; Brick/Block
• Pack Quantity: 1
• Country of Origin: Germany

Approved Applications

• Reinforced concrete and concrete drilling for anchor setting and structural fastening

Frequently Asked Questions

What makes the Rebar Demon different from a standard hammer drill bit?

Standard 2-cutter hammer drill bits typically use less carbide material and fail when heat exceeds 800 deg. Fahrenheit - which can happen quickly during rebar contact. The Rebar Demon uses Dura-Carbide with up to 2X more carbide material, withstands up to 1800 deg. Fahrenheit of intense heat, and delivers up to 7X longer life. The 4-cutter full carbide head also reduces vibration by taking smaller, more controlled bites of rebar rather than grinding against it with brute force.

Is this bit compatible with cordless SDS-Max rotary hammers?

Yes. The Rebar Demon SDS-Max hammer drill bit is optimized for maximum performance in both corded and cordless SDS-Max rotary hammer drills.

What does the wear mark indicator do?

The wear mark indicator is a built-in reference point on the bit that ensures precise hole making. It allows the operator to confirm when the correct hole depth has been reached - particularly important when drilling to a specific depth for anchor setting in reinforced concrete.

What is Tri-Metal Fusion Welding and why does it matter?

Tri-Metal Fusion Welding is the process Diablo uses to bond the full carbide head to the bit body. It produces a weld that is up to 3X stronger than standard welding methods, which means the carbide head stays intact even under the extreme impact forces generated when the bit strikes rebar inside reinforced concrete - preventing the head from cracking or separating mid-hole.